The heavy bands take up a large volume within the slabs and compete for space in the grid of post-tensioning tendons. David Steffenhagen, Senior Project Manager, McHugh Construction “It required a coordinated redevelop-ment of the MEP design-build system.” The sloping columns at the south cantilever are tied back to the shear wall system via heavy bands of high-strength reinforcement in the adjoining slabs. The building’s overall lateral stability is ensured by a concrete shear wall core and buttress wall system, Fields says. “The challenge was to provide stability for these columns and resist the lateral forces with the same structural system that resists the wind forces.” “This geometry induces major lateral forces on the building, not unlike the horizontal forces felt during a windstorm,” Fields explains. “The biggest engineering obstacle from a design perspective was resolving the forces imposed by the cantilevered levels,” Castillo says. The cantilever was created by a series of sloping columns along the south face of the building from Level 11 to 20. “A more conventional approach, prismatically extending the building taller, could have added the same area, but much of it would have been taken up by additional elevator, stair, corridor and other unsalable spaces,” Fields says. Under the new design, the building fronting Michigan Avenue will still be Jahn’s tallest in Chicago, at 805 ft, rather than 832 ft in the original plans. Jahn reduced the building’s height by 27 ft and changed it to 738 apartments rather than the 506 condominiums it was originally planned for. The design and construction team on the 74-story skyscraper had to reconfigure the building from condos to apartments following the COVID-19 pandemic and in response to the evolving real estate market. "The exterior is landmarked so any restoration work has to be done to their specifications.Jahn took a two-volume approach to the tower’s design, creating a rectangular base and a carved tower that widens as it rises.ġ000M is 74 stories tall and contains 738 luxury apartments. "The roof is going to have to be completely replaced. That's why, even after decades of constant renovations, Bowers said he will restore the home once more. The Warner house and others stand witness to all those changes. "We're on a really beautiful block in the Austin community with homes from the 1870's, 1880's and 1890's all around and we've always wanted to consider a Chicago Landmark District for this block and for some other significant streets nearby in Austin," said Ward Miller of Preservation Chicago.Īnd while it seems hard to believe today, Austin in the late 1880s was not even part of Chicago, evolving from rural settlements to a railroad suburb before becoming what it is now. Several others on this block of Central Avenue between Ohio and Huron have tales to tell as well. He invited Fredrick Douglass to speak at his music hall downtown Chicago where the Daley Center is in 1853," he said.īut it is not just this house that has a story. I mean, just didn't have enough foam in the fire extinguisher." "It was an intense fire and it burned very quickly and we're lucky they were able to save the building," said homeowner James Bowers. One firefighter was taken to the hospital to be checked out and is expected to be OK. Video shows firefighters working to put out that fire around 1:30 this morning on what looks like the top floor of the home. Chicago fire officials said two people were inside the home at the time of the fire, but fortunately they were able to safely escape. The fire was in the 600-block of North Central Avenue. The home is listed in the National Register of Historic Places.ĬHICAGO (WLS) - Flames tore through a 154-year-old home in Chicago's Austin neighborhood Thursday morning. The home is named after one of Chicago's earliest settlers who was a blacksmith abolitionist and patron of the arts, according to the city.
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